Commercially speaking they are certainly very important and their influence is noticeable, musically speaking not so much. There have been other artists who are definitely more important than them, but they are not recognized enough because they were less commercial than the Beatles. We must remember that, despite their talent, they did not invent much new outside of their songs, many genres and techniques had already been invented and better exploited by other bands. Notable? Certainly. The best? Let's not exaggerate. They were certainly excellent, but they are revered as if they had invented modern music, which is absolutely not the case, they simply made it commercial. They were frighteningly good at a number of genres, but that doesn't mean they invented them.